CN115435592A - Low-chromium alloy cast iron preparation device - Google Patents

Abstract

The invention discloses a low-chromium alloy cast iron preparation device, which belongs to the technical field of cast iron preparation and comprises an installation base, wherein a smelting furnace wall is arranged in the center of the upper end of the installation base, hydraulic telescopic rods are arranged on two sides of the smelting furnace wall, a smelting furnace cover is inserted in the upper end of the smelting furnace wall, two sides of the smelting furnace cover are fixedly connected with the upper end of a piston rod of each hydraulic telescopic rod, a central swivel base is rotatably connected with the center of the smelting furnace cover, a smelting crucible is fixedly connected to the bottom of the central swivel base through a hoisting mechanism, and the central swivel base is driven by a driving mechanism to drive the smelting crucible to rotate through the arranged central swivel base, so that molten iron in the smelting crucible can be stirred in a rotating mode, additives can be added and mixed conveniently, the uniformity of the mixing of the additives is improved, an air suction nozzle is arranged and is connected with a vacuum pump to keep the vacuum state in the smelting furnace wall, bubbles in the smelting crucible can be reduced conveniently, molten iron oxidation in the smelting process can be avoided, and the quality of finished products can be effectively improved.

Description

Low-chromium alloy cast iron preparation device

Technical Field

The invention relates to the technical field of cast iron preparation, in particular to a low-chromium alloy cast iron preparation device.

Background

The chromium cast iron is characterized in that chromium is added into iron, so that the physical structure and chemical properties of iron are changed, and the application field of the chromium cast iron is wider. The chromium cast iron is divided into low-chromium cast iron, medium-chromium cast iron and high-chromium cast iron according to the content of the chromium element, the chromium cast iron is developed almost simultaneously with the nickel hard cast iron, and the development is slow because the chromium cast iron needs to be smelted in an electric furnace. After the 60's of the 20 th century, high-chromium cast irons have developed considerably due to the widespread use of electric furnace melting.

However, in the prior art, a ladle in the existing cast iron is used for casting operation in a casting shop, receives molten iron in front of a furnace, and then conveys the molten iron to a casting mold for casting through a transfer trolley, and the traditional cast iron method comprises two steps, wherein one step is primary smelting, and the other step is refining; the primary smelting is to carry out melting, dephosphorization, decarburization and alloying of furnace burden in oxidizing atmosphere; the refining is to carry out deep decarburization, degassing, deoxidation, inclusion removal and inclusion modification treatment under the conditions of vacuum, inert gas or controlled atmosphere, adjust components, control the temperature of molten steel and the like, so as to optimize the process and the product structure, develop products with high added value, save energy, reduce consumption, reduce cost and increase economic benefits.

Disclosure of Invention

The invention aims to provide a low-chromium alloy cast iron preparation device, which can be used for conveniently adding and mixing additives, improving the mixing uniformity of the additives, conveniently reducing bubbles in a melting crucible, avoiding molten iron oxidation in the melting process and effectively improving the quality of finished products.

In order to solve the problems, the invention adopts the following technical scheme:

the utility model provides a low-chromium alloy cast iron preparation facilities, includes the installation base, the upper end center of installation base is provided with the smelting furnace wall, and the both sides of smelting the furnace wall are provided with hydraulic telescoping rod, the upper end of smelting the furnace wall is inserted and is equipped with the smelting bell, and the both sides of smelting the bell and hydraulic telescoping rod's piston rod upper end fixed connection, the center of smelting the bell is rotated and is connected with central swivel mount, and the bottom of central swivel mount has the smelting crucible through hoisting machine fixedly connected with, the upper end of smelting the bell is provided with actuating mechanism, and the inner wall evenly distributed of smelting the crucible has many rings of helical blade, and actuating mechanism and central swivel mount transmission are connected, it is unsettled to insert and locate in the smelting furnace wall to smelt the crucible, and the smelting furnace wall inner wall corresponds the smelting crucible second section and is provided with electromagnetic heating coil, the bottom of smelting the furnace wall is provided with the air extraction mouth, and the air extraction mouth is connected with the vacuum pump air extraction end through burying underground with the pipeline in the installation base.

As a preferable scheme of the invention, a contact seat plate is arranged at the upper end of the outer wall of the central swivel base, an annular groove is arranged at the center of the contact surface of the contact seat plate and the smelting furnace cover, a plurality of contact steel balls are uniformly distributed in the annular grooves of the contact surface of the contact seat plate and the smelting furnace cover, and the contact surface of the central swivel base and the smelting furnace cover is arranged on a graphite rotary sealing ring.

As a preferable scheme of the invention, the driving mechanism comprises a driving motor, the driving motor is installed on one side of the upper end of the smelting furnace cover through a support, an output shaft of the driving motor is in key connection with a driving gear, a plurality of convex teeth are uniformly distributed on the outer edge of the contact seat plate, and the convex teeth on the outer side of the contact seat plate are meshed with the driving gear.

As a preferable scheme of the invention, the upper end of the inner wall of the melting crucible is provided with a liquid baffle ring, and the center of the liquid baffle ring is provided with a circular material port.

As a preferred scheme of the invention, the hoisting mechanism comprises a plurality of pairs of connecting seats and hoisting ropes, the connecting seats are uniformly distributed at the upper end of the liquid blocking ring, the lower end of each hoisting rope is connected with the connecting seats, and the upper end of each hoisting rope is connected with the bottom of the central swivel base.

As a preferable scheme of the invention, a connecting ring is arranged at the upper end of the hoisting rope, a plurality of U-shaped hanging rings are arranged at the bottom of the central swivel base, and the connecting rings and the U-shaped hanging rings are sleeved and fixed in a one-to-one correspondence manner.

As a preferred scheme of the invention, the lower end of the hoisting rope is fixedly connected with a quick connector, and the inward side of the connecting seat is provided with a quick connecting clamping groove which is matched with the quick connector.

As a preferable scheme of the invention, a feeding cavity is formed in the center of the bottom of the central rotating seat, a feeding guide seat is inserted into the bottom of the feeding cavity, a hopper-shaped recess is formed in the center of the upper end of the feeding guide seat, and a feeding channel is formed in the center of the bottom of the hopper-shaped recess.

As a preferred scheme of the invention, a plurality of turnover hinged supports are arranged in an annular array at the upper end of the inner wall of the central swivel base, a storage box is fixed at the inner end of each turnover hinged support in a hinged manner, a plurality of electromagnets are arranged at the positions, corresponding to the plurality of storage boxes, at the upper end of the central swivel base, and a storage tank is arranged at the inner side of each storage box.

As a preferable scheme of the invention, a material guide cylinder is arranged at the center of the lower end of the feeding guide seat, and the material guide cylinder is arranged close to the center of the upper end of the liquid blocking ring.

Compared with the prior art, the invention has the advantages that:

(1) This scheme is through the melting crucible and the electromagnetic heating coil that set up, it is unsettled at electromagnetic heating coil's center through hoisting mechanism to smelt the crucible, metal material in the crucible is smelted in electromagnetic induction heating through electromagnetic heating coil, through the central swivel mount that sets up, the crucible rotation is smelted in drive mechanism's drive is down driven to central swivel mount, make the interior molten iron of smelting crucible can be at rotatory stirring, the addition of the additive of being convenient for mixes, the homogeneity that the additive mixes has been improved, through the air exhaust mouth that sets up, the vacuum pump is connected to the air exhaust mouth and the vacuum state in keeping the smelting furnace wall, be convenient for reduce the bubble in the melting crucible and avoid smelting in-process molten iron oxidation, the finished product quality has effectively been improved.

(2) This scheme is through what set up throws the material guide holder, the fill shape of throwing the material guide holder is sunken to put in additive concentration, be convenient for to reinforced in the smelting crucible, through the upset free bearing that sets up, can keep the level under the absorption of electro-magnet after the additive is loaded to the storage tank in the storage box, the additive in the storage tank is close to the outside of storage tank under the effect of centrifugal force, when needs add the on-time, the electro-magnet outage, the storage box front end is liberated, round the upset free bearing upset, fall the additive in the storage tank, make operating personnel can control the add time of additive through the outage time control electro-magnet, need not to uncap and add, be convenient for operation and continuous production, through the guide cylinder that sets up, make the additive be close to the fender liquid ring more and put, guarantee that the additive can be accurate through fender liquid ring center material mouth, avoid the additive to spill and lead to finished product alloy quality to reduce.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a front sectional view of the present invention.

Fig. 3 is an enlarged view of the invention at a in fig. 2.

Fig. 4 is an enlarged view of the invention at B in fig. 2.

Fig. 5 is a side cross-sectional view of the present invention.

The reference numbers in the figures illustrate:

1. installing a base; 2. a wall of the smelting furnace; 3. a hydraulic telescopic rod; 4. a smelting furnace cover; 5. a central swivel base; 6. smelting a crucible; 7. an electromagnetic heating coil; 8. a suction nozzle; 9. a contact base plate; 10. a liquid retaining ring; 11. a connecting seat; 12. hoisting a rope; 13. contacting the steel ball; 14. a graphite rotary seal ring; 15. a feeding guide seat; 16. a connecting ring; 17. a quick connection part; 18. a clamping groove is connected quickly; 19. a feeding cavity; 20. a storage box; 21. turning over the hinged support; 22. an electromagnet; 23. a drive motor; 24. a material guide cylinder.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "fitted/connected", "connected", and the like, are to be interpreted broadly, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

referring to fig. 1-5, a low-chromium alloy cast iron preparation device comprises an installation base 1, a smelting furnace wall 2 is arranged at the center of the upper end of the installation base 1, hydraulic telescopic rods 3 are arranged on two sides of the smelting furnace wall 2, a smelting furnace cover 4 is inserted into the upper end of the smelting furnace wall 2, two sides of the smelting furnace cover 4 are fixedly connected with the upper end of a piston rod of the hydraulic telescopic rods 3, the smelting furnace wall 2 and the smelting furnace cover 4 are made of refractory bricks and serve as lining jacket cylinder sleeves, a central rotary seat 5 is rotatably connected to the center of the smelting furnace cover 4, a smelting crucible 6 is fixedly connected to the bottom of the central rotary seat 5 through a hoisting mechanism, the central rotary seat 5 and the central rotary seat 5 are both made of alumina ceramic materials, a driving mechanism is arranged at the upper end of the smelting furnace wall 4, a plurality of helical blades are uniformly distributed on the inner wall of the smelting crucible 6, the driving mechanism is in transmission connection with the central rotary seat 5, the smelting crucible 6 is suspended and inserted into the smelting furnace wall 2, an electromagnetic heating coil 7 is arranged on the inner wall of the smelting furnace wall 2 corresponding to the lower half section of the smelting furnace wall 6, an air suction nozzle 8 is arranged at the bottom of the smelting furnace wall 2, and an air suction nozzle 8 is connected with an air suction end of a vacuum pump through a pipeline embedded in the installation base 1.

Specifically, a contact seat plate 9 is arranged at the upper end of the outer wall of the central swivel base 5, an annular groove is formed in the center of the contact surface between the contact seat plate 9 and the smelting furnace cover 4, a plurality of contact steel balls 13 are uniformly distributed in the annular groove of the contact surface between the contact seat plate 9 and the smelting furnace cover 4, and the contact surface between the central swivel base 5 and the smelting furnace cover 4 is arranged on a graphite rotary sealing ring 14; through a plurality of contact steel balls 13, the friction resistance of the contact seat plate 9 during rotation is reduced, and the friction resistance of the rotation of the central rotary seat 5 is reduced while the contact surface of the central rotary seat 5 and the smelting furnace cover 4 is kept sealed through the graphite rotary sealing ring 14.

Specifically, the driving mechanism comprises a driving motor 23, the driving motor 23 is mounted on one side of the upper end of the smelting furnace cover 4 through a support, an output shaft of the driving motor 23 is in key connection with a driving gear, a plurality of convex teeth are uniformly distributed on the outer edge of the contact seat plate 9, and the convex teeth on the outer side of the contact seat plate 9 are meshed with the driving gear; through the driving motor 23 who sets up, driving motor 23 drives contact bedplate 9 through the driving gear and the meshing transmission of contact bedplate 9 and rotates to drive central swivel mount 5 and rotate, simple structure, convenient to use.

Specifically, the upper end of the inner wall of the smelting crucible 6 is provided with a liquid blocking ring 10, and the center of the liquid blocking ring 10 is provided with a circular material port; through the liquid blocking ring 10, the liquid blocking ring 10 can block molten iron in the smelting crucible 6 when the molten iron moves to the position of the liquid blocking ring 10 along the helical blades under the action of centrifugal force, so that the molten iron falls back to the center of the smelting crucible 6 again, and the mixing and stirring effects are achieved.

Specifically, the hoisting mechanism comprises a plurality of pairs of connecting seats 11 and hoisting ropes 12, the connecting seats 11 are uniformly distributed at the upper end of the liquid baffle ring 10, the lower ends of the hoisting ropes 12 are connected with the connecting seats 11, and the upper ends of the hoisting ropes 12 are connected with the bottom of the central swivel base 5; through the connecting seat 11 and the hoist and mount rope 12 that set up, hoist and mount are connected through hoist and mount rope 12 to connecting seat 11 and the bottom of central swivel mount 5, simple structure, convenient to use.

Specifically, the upper end of the hoisting rope 12 is provided with a connecting ring 16, the bottom of the central swivel base 5 is provided with a plurality of U-shaped hanging rings, and the connecting rings 16 and the U-shaped hanging rings are fixedly sleeved in a one-to-one correspondence manner; the connection and the movement of the upper end of the hoisting rope 12 are convenient through the matching of the connecting ring 16 and the U-shaped hanging ring, the structure is simple, and the use is convenient.

Specifically, the lower end of the hoisting rope 12 is fixedly connected with a quick connector 17, and the inward side of the connecting seat 11 is provided with a quick connector slot 18, and the quick connector slot 18 is matched with the quick connector 17; the quick-connecting piece 17 is of a T-shaped structure, the quick-connecting clamping groove 18 is an inverted T-shaped groove with an opening at the inner side, a square clamping groove is formed in the inner side of a transverse section of the T-shaped structure, the quick-connecting piece 17 is inserted into the T-shaped transverse section of the quick-connecting piece 17 from the inner side of the quick-connecting clamping groove 18, the T-shaped transverse section of the quick-connecting piece 17 is clamped into the square clamping groove, fixing effect is achieved, connection and disassembly are convenient, and continuous production is facilitated.

Specifically, a feeding cavity 19 is formed in the center of the bottom of the central rotating seat 5, a feeding guide seat 15 is inserted into the bottom of the feeding cavity 19, a hopper-shaped recess is formed in the center of the upper end of the feeding guide seat 15, and a feeding channel is formed in the center of the bottom of the hopper-shaped recess; through the material guide holder 15 of throwing that sets up, the hopper-shaped of throwing material guide holder 15 is sunken to put in additive concentration, is convenient for add in smelting crucible 6.

Specifically, a plurality of turning hinged supports 21 are arranged on the upper end of the inner wall of the central swivel base 5 in an annular array manner, a storage box 20 is hinged and fixed at the inner end of each turning hinged support 21, each storage box 20 is of an iron structure, a plurality of electromagnets 22 are arranged at the positions, corresponding to the plurality of storage boxes 20, of the upper end of the central swivel base 5, and a storage tank is arranged on the inner side of each storage box 20; the lower edge of stock chest inboard opening of storage case 20 is higher than the tank bottom, upset free bearing 21 through the setting, can keep the level under the absorption of electro-magnet 22 after the storage tank loads the additive in the storage case 20, the additive in the storage tank is close to the outside of stock chest under the effect of centrifugal force, when needs add the time, electro-magnet 22 outage, storage case 20 front end is released, round upset free bearing 21 upset, fall the additive in the stock chest, make operating personnel can be through the add time of the outage time control additive of control electro-magnet 22, need not to uncap and add, be convenient for operation and continuous production.

Specifically, a material guide cylinder 24 is arranged at the center of the lower end of the feeding guide seat 15, and the material guide cylinder 24 is arranged close to the center of the upper end of the liquid baffle ring 10; through the guide cylinder 24, the additive is put closer to the liquid blocking ring 10, the additive can be accurately fed through the central material opening of the liquid blocking ring 10, and the problem that the quality of finished alloy is reduced due to the fact that the additive is spilled is avoided.

The working principle is as follows: when the device uses, smelt bell 4 and rise through the drive of hydraulic telescoping rod 3, add in central swivel mount 5 smelting metal material, through connect soon 17 and connect soon the cooperation of draw-in groove 18 will smelt crucible 6 and hoist and mount in the bottom of central swivel mount 5, then contract hydraulic telescoping rod 3, will be equipped with metal material's smelting crucible 6 below to electromagnetic heating coil 7 center, start electromagnetic heating coil 7 and vacuum pump oven, melt metal material under vacuum environment, then rotate through actuating mechanism drive center swivel mount 5, make the interior molten iron of smelting crucible 6 can be at rotatory stirring, the addition of the additive of being convenient for mixes, the homogeneity that the additive mixes has been improved, through the extraction nozzle 8 that sets up, 8 connection vacuum pumps of air suction nozzle keep smelting the vacuum state in 2, be convenient for reduce the bubble of smelting in the crucible 6 and avoid smelting in-process molten iron oxidation, the finished product quality has effectively been improved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the equivalent replacement or change according to the technical solution and the modified concept of the present invention should be covered by the scope of the present invention.

Claims (10)

1. The utility model provides a low chromium alloy cast iron preparation facilities, includes installation base (1), its characterized in that: the utility model discloses a smelting furnace, including installation base (1), smelting furnace wall (2), hydraulic telescoping rod (3), smelting furnace wall (2), smelting furnace wall (4) and piston rod upper end fixed connection of smelting furnace wall (2), the upper end of smelting furnace wall (2) is inserted and is equipped with smelting bell (4), and the both sides of smelting bell (4) and hydraulic telescoping rod (3), the center of smelting bell (4) is rotated and is connected with central swivel mount (5), and the bottom of central swivel mount (5) through hoist and mount mechanism fixed connection smelting crucible (6), the upper end of smelting bell (4) is provided with actuating mechanism, and the inner wall evenly distributed of smelting crucible (6) has many rings helical blade, and actuating mechanism and central swivel mount (5) transmission are connected, smelting crucible (6) are inserted and are located in smelting furnace wall (2), and the corresponding smelting crucible (6) inner wall lower half section is provided with electromagnetic heating coil (7), the bottom of smelting crucible (2) is provided with air extraction mouth (8), and air extraction mouth (8) are connected with the vacuum pump end through the pipeline buried underground in installation base (1).

2. The apparatus of claim 1, wherein: the outer wall upper end of center swivel mount (5) is provided with contact bedplate (9), and contact bedplate (9) and the contact surface center department of smelting bell (4) are provided with annular groove, evenly distributed has a plurality of contact steel balls (13) in the annular groove of contact bedplate (9) and smelting bell (4) contact surface, and the contact surface of center swivel mount (5) and smelting bell (4) sets up in graphite swivel seal (14).

3. The apparatus of claim 2, wherein: the driving mechanism comprises a driving motor (23), the driving motor (23) is installed on one side of the upper end of the smelting furnace cover (4) through a support, an output shaft of the driving motor (23) is in keyed connection with a driving gear, a plurality of convex teeth are uniformly distributed on the outer edge of the contact seat plate (9), and the convex teeth on the outer side of the contact seat plate (9) are meshed with the driving gear.

4. The apparatus of claim 1, wherein: a liquid blocking ring (10) is arranged at the upper end of the inner wall of the smelting crucible (6), and a circular material port is arranged at the center of the liquid blocking ring (10).

5. The apparatus according to claim 4, wherein the apparatus comprises: the hoisting mechanism comprises a plurality of pairs of connecting seats (11) and hoisting ropes (12), the connecting seats (11) are uniformly distributed at the upper end of the liquid blocking ring (10), the lower ends of the hoisting ropes (12) are connected with the connecting seats (11), and the upper ends of the hoisting ropes (12) are connected with the bottom of the central rotating seat (5).

6. The apparatus of claim 5, wherein: the upper end of hoist and mount rope (12) is provided with go-between (16), the bottom of center swivel mount (5) is provided with a plurality of U-shaped links, and a plurality of go-between (16) cup joint fixedly with a plurality of U-shaped links one-to-one.

7. The apparatus of claim 5, wherein: the lower extreme fixedly connected with of hoist and mount rope (12) connects piece (17) soon, and the inwards one side of connecting seat (11) is provided with connects draw-in groove (18) soon, connect draw-in groove (18) soon and connect piece (17) phase-match.

8. The apparatus of claim 1, wherein: the feeding device is characterized in that a feeding cavity (19) is formed in the center of the bottom of the central rotating seat (5), a feeding guide seat (15) is inserted into the bottom of the feeding cavity (19), a hopper-shaped recess is formed in the center of the upper end of the feeding guide seat (15), and a feeding channel is formed in the center of the bottom of the hopper-shaped recess.

9. The apparatus of claim 8, wherein: the inner wall upper end annular array of center swivel mount (5) is provided with a plurality of upset free bearings (21), and the articulated storage case (20) that is fixed with in the inner end of upset free bearing (21), the upper end of center swivel mount (5) corresponds a plurality of storage case (20) positions and is provided with a plurality of electro-magnets (22), and the storage silo has been seted up to the inboard of storage case (20).

10. The apparatus of claim 8, wherein: a material guide cylinder (24) is arranged at the center of the lower end of the feeding guide seat (15), and the material guide cylinder (24) is arranged close to the center of the upper end of the liquid blocking ring (10).

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